US9796015B2 - Molding sand for three dimensional laminate molding - Google Patents

Molding sand for three dimensional laminate molding Download PDF

Info

Publication number
US9796015B2
US9796015B2 US14/343,893 US201214343893A US9796015B2 US 9796015 B2 US9796015 B2 US 9796015B2 US 201214343893 A US201214343893 A US 201214343893A US 9796015 B2 US9796015 B2 US 9796015B2
Authority
US
United States
Prior art keywords
sand
molding
molding sand
mold
slump
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US14/343,893
Other languages
English (en)
Other versions
US20140224152A1 (en
Inventor
Yoya Fukuda
Kenichi Hayashi
Takashi Komai
Yusuke Urushibata
Yusuke Tomita
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kimura Chuzosho Co Ltd
Original Assignee
Kimura Chuzosho Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kimura Chuzosho Co Ltd filed Critical Kimura Chuzosho Co Ltd
Assigned to KIMURA CHUZOSHO CO., LTD. reassignment KIMURA CHUZOSHO CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FUKUDA, YOYO, HAYASHI, KENICHI, KOMAI, TAKASHI, TOMITA, YUSUKE, URUSHIBATA, Yusuke
Assigned to KIMURA CHUZOSHO CO., LTD. reassignment KIMURA CHUZOSHO CO., LTD. CORRECTIVE ASSIGNMENT TO CORRECT THE CORRECTIVE ASSIGNMENT TO CORRECT THE FIRST INVENTOR'S FIRST NAME FROM YOYO TO YOYA PREVIOUSLY RECORDED ON REEL 032395 FRAME 0025. ASSIGNOR(S) HEREBY CONFIRMS THE THE ASSIGNMENT. Assignors: FUKUDA, YOYA, HAYASHI, KENICHI, KOMAI, TAKASHI, TOMITA, YUSUKE, URUSHIBATA, Yusuke
Publication of US20140224152A1 publication Critical patent/US20140224152A1/en
Application granted granted Critical
Publication of US9796015B2 publication Critical patent/US9796015B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
    • B22C1/10—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives for influencing the hardening tendency of the mould material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B33—ADDITIVE MANUFACTURING TECHNOLOGY
    • B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y70/00—Materials specially adapted for additive manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/02—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by additives for special purposes, e.g. indicators, breakdown additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
    • B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
    • B22C1/20—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents
    • B22C1/22—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents of organic agents of resins or rosins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings

Definitions

  • This invention relates to a molding sand for three dimensional laminate molding (e.g., 3D printing, additive manufacturing) for use in an organic self-hardening mold for molding, and particularly to a molding sand for a sand mold with no veining defect occurring upon molding.
  • a molding sand for three dimensional laminate molding e.g., 3D printing, additive manufacturing
  • RP rapid prototyping molding method
  • This method is a technique for producing a sand mold directly from 3DCAD data (e.g. Patent Document 1).
  • This RP molding method has advantages in that a sand mold with a complicated shape can easily be produced and the dimension accuracy is good.
  • the RP molding method using a mold by an organic binder is classified into a two liquid mixed self-hardening type of printing a resin to a sand having a hardening agent as a catalyst for hardening a resin mixed, and a thermohardening type of illuminating laser to a sand having been coated with resin in advance (RCS: resin coated sand) to harden.
  • thermohardening type of three dimensional laminate molding is, since the resin used is excellent in heat resistance, possible to be applied to many materials from aluminum alloy to be cast into at a low temperature to cast iron and cast steel to be cast into at a high temperature. Therefore, for high melting point metal such as cast iron, the thermohardening type has conventionally been used.
  • Patent Document 1 JP-A-H9-168840
  • Patent Document 2 JP-A-H5-169184
  • Patent Document 3 JP-A-2003-251434
  • Patent Document 4 JP-A-2004-202577
  • thermohardening type of three dimensional laminate molding technique since it is difficult to increase in size of the equipment to use therefor, a large molded product cannot be obtained and even if a large product is attempted to be molded, its molding requires a large amount of time. Therefore, there is a problem in that it cannot be applied to a large product. Moreover, since sufficient strength cannot be obtained by laser illumination only, there is also trouble that heat treatment needs to be performed after molding to increase the strength.
  • three dimensional laminate molding by the two liquid mixed self-hardening type which is, by using a large printer head, capable of molding a large product quickly, can be applied to a large product, and is also an advantageous molding method in terms of production cost and productivity.
  • heat treatment does not need to be performed after molding.
  • the inventors have attempted to mold a cylinder head of cast iron by a three dimensional laminate molding sand mold produced by the RP molding method by the two liquid mixed self-hardening type of printing a resin to a sand having a hardening agent as a catalyst for hardening a resin mixed.
  • the inventors have, in recent years, focused on low thermal expansibility of an artificial sand with the purpose of improving flowability and fire resistance of a sand, for example an artificial sand produced by a sintering method, a fusion method (atomizing method), a flame fusion method and the like as descried in Patent Documents 2 to 4, and attempted to apply it to the three dimensional laminate molding method (see FIG. 2 ).
  • thermohardening type which coats a resin to a molding sand in advance, does not have the problem of flowability.
  • thermohardening type of sand mold it is common to use a natural sand having a hardening agent added and kneaded.
  • the invention is to advantageously solve the above problems, and the object is to provide a molding sand preferable for use in a mold produced using the self-hardening type of three dimensional laminate molding sand mold, having low thermal expansibility preventing occurrence of a veining defect, and capable of forming a large and complicated shape.
  • the inventors have, in order to solve the above problems, kept examining further diligently about thermal expansibility and flowability of an artificial sand and the like. Then they have found that a molding sand having thermal expansibility for no veining defect to occur, and capable of laminating a sand with the purpose of forming a large and complicated shape may be obtained by mixing so as to have predetermined thermal expansion property and flowability.
  • a molding sand for three dimensional laminate molding having a hardening agent as a catalyst for hardening a resin kneaded, wherein the linear thermal expansion amount when a mold produced using the molding sand is heated from a room temperature to 1000° C. is not more than 0.9%, and the ratio (D/d) between the diameter of a slump (D) and the diameter of a slump cone (d) in a slump test of the molding sand is not less than 1.65.
  • a molding sand for three dimensional laminate molding capable of producing a molded product with a large and complicated shape while preventing occurrence of a veining defect.
  • FIG. 1 is a view showing a burr-like defect referred to as a veining defect
  • FIG. 2 is a graph showing the thermal expansion amount of an artificial sand and the like
  • FIG. 3 is a view showing a recoater for laminating a sand for three dimensional laminate molding
  • FIG. 4 is a view showing the measurement point (slump test) of the flowability of a molding sand.
  • the invention is a technique applicable to the two liquid mixed self-hardening type of printing a resin having a hardening agent mixed, among the three dimensional laminate molding (RP molding) methods.
  • a molding sand for three dimensional laminate molding having a hardening agent as a catalyst for hardening a resin kneaded is used, and the requirements essential as the physical properties thereof are the following two: linear thermal expansion amount and powder flowability.
  • the mold (sand mold) according to the invention sets the linear thermal expansion amount when heated from a room temperature to 1000° C. to be not more than 0.9%. It is because with more than 0.9%, when molding is performed in the subject mold, a micro crack and the like occur in the mold, which become starting points of a veining defect.
  • the lower limit of the linear thermal expansion amount is not particularly limited, may be 0%, but is industrially about 0.8%.
  • the powder flowability of a molding sand of the invention can be represented by the ratio (D/d) between the diameter of a slump (D) and the diameter of a slump cone (d) in a slump test.
  • the diameter of a slump (D) is obtained in a test for measuring the flowability of a molding sand referred to as slump test, as shown in FIG. 4 .
  • the diameter of a slump (D) refers to a spread of a sand 2 when the sand 2 is filled in a cup referred to as slump cone 1 and the slump cone is lifted up from a surface plate 3 .
  • a slump cone with the diameter of the opening of 70 mm, the diameter of the bottom of 50 mm, and the height of 80 mm is used.
  • the diameter of the opening: 70 mm is the diameter of the slump cone: d.
  • the flowability of a molding sand can be evaluated by measuring the slump flow when a slump cone is vertically lifted up, i.e. the diameter of a spread of a molding sand (D), and using the diameter of the slump thereof (D) to obtain the ratio (D/d) with the diameter of the slump cone.
  • the above ratio (D/d) is required to be not less than 1.65. It is because, with less than 1.65, the flowability of a molding sand becomes extremely poor, and in a recoater for laminating a sand with the purpose of forming a complicated shape, as shown in FIG. 3 , a molding sand does not flow.
  • the upper limit of the above ratio (D/d) is not particularly limited, but the industrially producible is about 2.0.
  • any of conventionally known hardening agents i.e. ones for hardening an organic resin such as a furan resin and the like at a room (or ambient) temperature can be preferably used.
  • ones containing xylene sulfonic acid or toluene sulfonic acid as a main component are excellent in handling and are preferable.
  • the kneading ratio of the hardening agent is, based on the total mass of the molding sand, preferably within a range of 0.1 to 1.0% by mass. It is because, by kneading the hardening agent within this range, the moldability and the flowability of the molding sand are balanced the best.
  • a raw material of the molding sand is not particularly limited as long as it is typically used as the molding sand, and the values of the linear thermal expansion amount and the above ratio (D/d) are satisfied as described above respectively, for example, with respect to a natural silica sand, it is preferable to knead the following second component and the above hardening agent.
  • the above second component is preferably a natural or artificial sand with a linear thermal expansion amount smaller than the natural silica sand, and the kneading ratio thereof is, based on the mass of the molding sand, preferably within a range of 40 to 95% by mass. It is because, by kneading the natural or artificial sand with the above linear thermal expansion amount in the above kneading ratio, the linear thermal expansion amount when a mold produced using the molding sand is heated from a room temperature to 1000° C. is easily adjusted to be not more than 0.9%.
  • the natural sand includes a zircon sand.
  • the second component in the invention does not need to be a simple product such as an artificial sand comprising one oxide, and there is no problem as long as the values of the above linear thermal expansion amount and the above ratio (D/d) are satisfied respectively, even with a mixture of a natural or artificial sand, or even mixing a plurality of the following artificial sand, for example.
  • an artificial sand produced by a sintering method, a fusion method or a flame fusion method, and at least one kind selected from a new sand, a reclaimed sand thereof and a reborn sand thereof can be used.
  • an artificial sand produced by a sintering method which has the average particle size of 0.5 to 2 times the average particle size of the natural silica sand, specifically of about 80 to 200 ⁇ m, is preferable in terms of handling.
  • composition thereof mixed systems such as alumina (Al—O system), mullite (Al—Si—O system), mullite-zircon (Al—Si—Zr—O system) and the like are preferable.
  • the sphericity of the artificial sand is not particularly limited, and a known product is good. Also, in the invention, as the above average particle size, a value measured using a laser diffraction type particle size analyzer is used.
  • silica sand one with the average particle size: within a range of 80 to 250 ⁇ m is preferable.
  • the equipment used upon kneading may be a conventionally known device.
  • various kneading devices for kneading cement, mortar and the like can be used.
  • the kneading conditions may follow the normal method upon using the subject kneading device.
  • Average particle size 0.5 to 2 times the average particle size of the natural silica sand is preferable, and 0.7 to 1.5 times is more preferable. Further, 80 to 250 ⁇ m is preferable, and 100 to 200 ⁇ m is more preferable.
  • the main component (contained in not less than 70% by mass) is SiO 2 , and the remainder is inevitable impurities.
  • Average particle size 80 to 250 ⁇ m is preferable, and 100 to 200 ⁇ m is more preferable.
  • the invention uses the three dimensional laminate molding (RP molding) method, and when a sand mold for the upper mold is produced, the sand mold for the upper mold can be directly formed by laminating a material one layer by one layer, without using mechanical processing based on data obtained by 3DCAD designing the shape of the upper mold.
  • a print molding method is used. More specifically, an RP sand mold molding device (e.g. Prometal RCT S-print (trademark), distributer: Ex One KK) is used, firstly, to evenly spread a thin layer of a molding sand on a flat surface by a blade mechanism having a recoater as described in FIG. 3 .
  • the thickness of one layer is preferably within a range of 200 to 500 ⁇ m. It is more preferably within a range of 200 to 300 ⁇ m. It is because, by setting the print thickness to be such a thickness, a sand mold with a more complicated shape can be formed.
  • a layer as a region where a binder is printed is in a connection state, and also binds to the lower layer which has already been formed. Then, until the entire sand mold for the upper mold is completed, a step of forming a thin layer on the top sequentially and printing a binder is repeated.
  • a molding sand where a binder did not attach is in a non-connection state and can be removed easily when the sand mold for the upper mold is removed from the device, so the sand mold for the upper mold becomes separable.
  • the furan resin includes a furan resin comprising one kind or more selected from the group consisting of furfuryl alcohol, a condensate of furfuryl alcohol and aldehydes, a condensate of phenols and aldehydes, and a condensate of urea and aldehydes, or two kinds or more of condensates selected from the above group, for example.
  • a natural silica sand, an artificial sand and a hardening agent were kneaded using a kneading mixer to produce a molding sand, a thin layer of the molding sand was evenly spread on a flat surface using a blade mechanism having a recoater shown in FIG. 3 , and to a desirable region of this thin layer, an inkjet nozzle head was scanned based on a predetermined 3DCAD data to print a binder as an organic resin. Additionally, in this regard, the thickness of one layer was 200 to 400 ⁇ m.
  • the natural silica sand, the artificial sand, the hardening agent and the organic resin used in the above example are as follows.
  • the above sphericity is a value obtained by the formula [peripheral length of a perfect circle with the same area as the projected area of particle (mm)]/[peripheral length of the projected area of particle (mm)].
  • two spherical lengths in the formula can be obtained by taking an enlarged (close-up) photograph of the subject particle, and then applying the photograph to an image analyzer.
  • a calculation was performed for about 10 optional particles and the average value was the sphericity of the subject particle.
  • a slump cone with the diameter of the opening (d) of 85 mm, the diameter of the bottom of 58 mm, and the height of 140 mm was used.
  • Molding was performed by the RP molding method under the following conditions using the above molding sand.
  • the above inventive example could form a sand mold (mold) not requiring additional heat treatment, and moreover, in the molding step using the sand mold, a molded product having no veining defect occurring, and having a predetermined shape could be produced.
  • Comparative Example 1 one having a natural silica sand and a hardening agent kneaded (Comparative Example 1), and one having an artificial sand and a hardening agent kneaded (Comparative Example 2) were produced, a mold was produced by the RP molding method under the same condition, and molding in the same shape was performed with cast iron of the same material.
  • a sand mold formed by the RP molding method not requiring heat treatment can be applied to production of engine cylinder heads, water boxes for engine, cylinder blocks for engine, impeller for large pump, and the like, as molded products having a complicated hollow structure and a high melting point.
US14/343,893 2012-05-17 2012-09-10 Molding sand for three dimensional laminate molding Active 2032-11-23 US9796015B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2012-113632 2012-05-17
JP2012113632A JP5249447B1 (ja) 2012-05-17 2012-05-17 三次元積層造型用の鋳物砂
PCT/JP2012/073760 WO2013171921A1 (ja) 2012-05-17 2012-09-10 三次元積層造型用の鋳物砂

Publications (2)

Publication Number Publication Date
US20140224152A1 US20140224152A1 (en) 2014-08-14
US9796015B2 true US9796015B2 (en) 2017-10-24

Family

ID=49041891

Family Applications (1)

Application Number Title Priority Date Filing Date
US14/343,893 Active 2032-11-23 US9796015B2 (en) 2012-05-17 2012-09-10 Molding sand for three dimensional laminate molding

Country Status (5)

Country Link
US (1) US9796015B2 (ja)
EP (1) EP2851142A4 (ja)
JP (1) JP5249447B1 (ja)
CN (1) CN104066532B (ja)
WO (1) WO2013171921A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10174183B2 (en) 2015-03-09 2019-01-08 Technology Research Association For Future Additive Manufacturing Organic binder, granular material, three-dimensional lamination-shaped mold manufacturing apparatus, and three-dimensional lamination-shaped mold manufacturing method

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014106178A1 (de) * 2014-05-02 2015-11-05 Ask Chemicals Gmbh Verfahren zum schichtweisen Aufbau von Körpern umfassend feuerfesten Formgrundstoff und Resole und Formen oder Kerne hergestellt nach diesem Verfahren
JP6470542B2 (ja) * 2014-10-23 2019-02-13 旭有機材株式会社 積層鋳型の造型方法
JP5867939B1 (ja) * 2014-12-18 2016-02-24 株式会社鷹取製作所 積層造形用材料、粉末固着積層法による鋳型の製造方法及び鋳型
WO2016143051A1 (ja) 2015-03-09 2016-09-15 技術研究組合次世代３Ｄ積層造形技術総合開発機構 粒状材料、３次元積層造形鋳型の製造装置および３次元積層造形鋳型の製造方法
PT3370962T (pt) * 2015-11-04 2023-04-10 Imerys Filtration Minerals Inc Métodos para fabrico aditivo
JP6868334B2 (ja) * 2015-12-02 2021-05-12 ダイハツ工業株式会社 鋳物砂
JP6868333B2 (ja) * 2015-12-02 2021-05-12 ダイハツ工業株式会社 砂型の製造方法および砂型
DE102015015629A1 (de) * 2015-12-03 2017-06-08 Audi Ag Verfahren zum Herstellen einer Gussform
JP6096378B1 (ja) 2016-02-15 2017-03-15 技術研究組合次世代３Ｄ積層造形技術総合開発機構 ３次元積層造形鋳型製造用粒状材料の製造方法および３次元積層造形鋳型の製造方法
JP6289648B1 (ja) * 2016-04-20 2018-03-07 技術研究組合次世代３Ｄ積層造形技術総合開発機構 粒状材料、粒状材料の製造方法および３次元積層造形鋳型の製造方法
US9987682B2 (en) 2016-08-03 2018-06-05 3Deo, Inc. Devices and methods for three-dimensional printing
CN106563763A (zh) * 2016-10-31 2017-04-19 宁夏共享模具有限公司 用于3d打印的颗粒材料及3d打印的铸造模型
JP6892284B2 (ja) * 2017-02-28 2021-06-23 ダイハツ工業株式会社 砂型の製造方法および鋳物砂
JP7061925B2 (ja) * 2017-05-16 2022-05-02 株式会社木村鋳造所 鋳造用砂型の製造方法
EP3626691A4 (en) * 2017-05-19 2021-03-17 AGC Ceramics Co., Ltd. MATERIAL FOR MOLDING, FUNCTIONAL INGREDIENT, MOLDED PRODUCT AND PRODUCT
CN110303117A (zh) * 2019-07-30 2019-10-08 天津致勤新型材料有限公司 3d打印用硅砂的预处理工艺、获得的硅砂及硅砂的应用
WO2021100838A1 (ja) 2019-11-22 2021-05-27 キンセイマテック株式会社 鋳物砂および砂型用キット
CN111375727A (zh) * 2020-04-22 2020-07-07 天津致勤新型材料有限公司 一种3d打印砂、高温及冷却处理工艺及其应用
CN115319021A (zh) * 2022-06-27 2022-11-11 日月重工股份有限公司 一种用3d打印生产大型铸钢件的方法
CN116372113B (zh) * 2023-02-09 2023-12-15 南京航空航天大学 砂型打印层间增强磁感应均衡负载加热方法与装置

Citations (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2817128A (en) * 1952-05-15 1957-12-24 Monsanto Chemicals Foundry sand compositions and process of making
US2828214A (en) * 1953-06-15 1958-03-25 Archer Daniels Midland Co Foundry sand additive
US3601161A (en) * 1967-08-16 1971-08-24 Erwin Buhrer Method and apparatus for dosing two types of molding sand into the molding box of a foundry mold
US3683995A (en) * 1970-03-25 1972-08-15 Lothar Robert Zifferer Method of making a composite sand mold including recycling the land
US3857712A (en) * 1970-07-07 1974-12-31 Tech Des Ind De La Fonderie We Method for increasing the mechanical resistance of foundry moulds or cores made for a self-hardning liquid sand
US4462777A (en) 1981-04-21 1984-07-31 Mitsubishi Jukogyo Kabushiki Kaisha Blow-moulding machine
EP0431924A2 (en) 1989-12-08 1991-06-12 Massachusetts Institute Of Technology Three-dimensional printing techniques
JPH05169184A (ja) 1991-12-16 1993-07-09 Naigai Ceramics Kk 高珪酸質球状鋳物砂及びその製造方法
KR930012259B1 (ko) * 1991-07-02 1993-12-28 김수현 주물사(鑄物砂)의 제조방법
JPH09168840A (ja) 1995-12-19 1997-06-30 Toyota Motor Corp 積層法による砂鋳型の造形方法
US20020110044A1 (en) * 2001-01-15 2002-08-15 Sintokogio, Ltd. Method for making sand covered with bentonite, the sand, and a method for recycling molding sand for a mold using the sand covered by bentonite
JP2003251434A (ja) 2002-02-28 2003-09-09 Yamakawa Sangyo Kk 鋳型用砂及びその製造方法
JP2004202577A (ja) 2002-12-09 2004-07-22 Kao Corp 球状鋳物砂
JP2006007319A (ja) 2004-05-21 2006-01-12 Kao Corp 鋳物砂
US20090093567A1 (en) * 2006-03-14 2009-04-09 Hitachi Chemical Company, Ltd. Resin composition for shell mold and resin coated sand
JP2009119469A (ja) 2007-11-12 2009-06-04 Kimura Chuzosho:Kk 自硬性流動鋳型
US20100139586A1 (en) * 2007-02-28 2010-06-10 Kabushiki Kaisha Riken Core for thin-wall hollow casting and thin-wall hollow casting produced by production method employing it
US20110042028A1 (en) * 2006-09-08 2011-02-24 Abraham Velasco-Tellez Binder composition amd method of forming foundry sand cores and molds
WO2011075222A1 (en) 2009-12-16 2011-06-23 Ashland Lincesing And Intellectual Property Llc Foundry mixes containing an organic acid salt and their uses
US20120043694A1 (en) * 2009-04-10 2012-02-23 Masahiko Kagitani Curing agent composition

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049065B2 (ja) * 1982-06-07 1985-10-30 山川産業株式会社 鋳型造型法
US6800452B1 (en) * 1994-08-08 2004-10-05 Science Applications International Corporation Automated methods for simultaneously performing a plurality of signal-based assays
CN101569921A (zh) * 2009-05-31 2009-11-04 铜陵安东铸钢有限责任公司 一种用树脂砂制型芯的铸造工艺方法
CN101992260A (zh) * 2010-11-05 2011-03-30 中国第一汽车集团公司 生产整体铸造桥壳用呋喃自硬树脂砂型

Patent Citations (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2817128A (en) * 1952-05-15 1957-12-24 Monsanto Chemicals Foundry sand compositions and process of making
US2828214A (en) * 1953-06-15 1958-03-25 Archer Daniels Midland Co Foundry sand additive
US3601161A (en) * 1967-08-16 1971-08-24 Erwin Buhrer Method and apparatus for dosing two types of molding sand into the molding box of a foundry mold
US3683995A (en) * 1970-03-25 1972-08-15 Lothar Robert Zifferer Method of making a composite sand mold including recycling the land
US3857712A (en) * 1970-07-07 1974-12-31 Tech Des Ind De La Fonderie We Method for increasing the mechanical resistance of foundry moulds or cores made for a self-hardning liquid sand
US4462777A (en) 1981-04-21 1984-07-31 Mitsubishi Jukogyo Kabushiki Kaisha Blow-moulding machine
EP0431924A2 (en) 1989-12-08 1991-06-12 Massachusetts Institute Of Technology Three-dimensional printing techniques
JPH06218712A (ja) 1989-12-08 1994-08-09 Massachusetts Inst Of Technol <Mit> 三次元プリント技術
KR930012259B1 (ko) * 1991-07-02 1993-12-28 김수현 주물사(鑄物砂)의 제조방법
JPH05169184A (ja) 1991-12-16 1993-07-09 Naigai Ceramics Kk 高珪酸質球状鋳物砂及びその製造方法
JPH09168840A (ja) 1995-12-19 1997-06-30 Toyota Motor Corp 積層法による砂鋳型の造形方法
US20020110044A1 (en) * 2001-01-15 2002-08-15 Sintokogio, Ltd. Method for making sand covered with bentonite, the sand, and a method for recycling molding sand for a mold using the sand covered by bentonite
US6591891B2 (en) * 2001-01-15 2003-07-15 Sintokogio Ltd. Method for making sand covered with bentonite, the sand, and a method for recycling molding sand for a mold using the sand covered by bentonite
JP2003251434A (ja) 2002-02-28 2003-09-09 Yamakawa Sangyo Kk 鋳型用砂及びその製造方法
JP2004202577A (ja) 2002-12-09 2004-07-22 Kao Corp 球状鋳物砂
JP2006007319A (ja) 2004-05-21 2006-01-12 Kao Corp 鋳物砂
US20090093567A1 (en) * 2006-03-14 2009-04-09 Hitachi Chemical Company, Ltd. Resin composition for shell mold and resin coated sand
US20110042028A1 (en) * 2006-09-08 2011-02-24 Abraham Velasco-Tellez Binder composition amd method of forming foundry sand cores and molds
US20100139586A1 (en) * 2007-02-28 2010-06-10 Kabushiki Kaisha Riken Core for thin-wall hollow casting and thin-wall hollow casting produced by production method employing it
JP2009119469A (ja) 2007-11-12 2009-06-04 Kimura Chuzosho:Kk 自硬性流動鋳型
US20120043694A1 (en) * 2009-04-10 2012-02-23 Masahiko Kagitani Curing agent composition
WO2011075222A1 (en) 2009-12-16 2011-06-23 Ashland Lincesing And Intellectual Property Llc Foundry mixes containing an organic acid salt and their uses

Non-Patent Citations (7)

* Cited by examiner, † Cited by third party
Title
"Crystal Quartz (SiO2) and Fused Silica". http://www.mt-berlin.com/frames-cryst/descriptions/quartz%20.htm# (Mar. 25, 2010 via Internet Wayback Machine). *
"Crystal Quartz (SiO2) and Fused Silica". http://www.mt-berlin.com/frames—cryst/descriptions/quartz%20.htm# (Mar. 25, 2010 via Internet Wayback Machine). *
Extended European Search Report issued in EP Application No. 12876702.7, dated Jun. 5, 2015 (5 pages).
International Search Report for corresponding International Application No. PCT/JP2012/073760, dated Dec. 11, 2012 (4 pages).
Notification for Reason for Refusal for corresponding Japanese Application No. 2012-113632, dated Dec. 4, 2012 (4 pages).
Second Office Action issued in corresponding Chinese Application No. 201280068184.4, dated Jan. 22, 2016 (6 pages).
Third Office Action dated Jun. 17, 2016, in corresponding Chinese Application No. 201280068184.4 (with translation) (6 pages).

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10174183B2 (en) 2015-03-09 2019-01-08 Technology Research Association For Future Additive Manufacturing Organic binder, granular material, three-dimensional lamination-shaped mold manufacturing apparatus, and three-dimensional lamination-shaped mold manufacturing method

Also Published As

Publication number Publication date
EP2851142A1 (en) 2015-03-25
WO2013171921A1 (ja) 2013-11-21
JP2013240799A (ja) 2013-12-05
CN104066532A (zh) 2014-09-24
CN104066532B (zh) 2017-03-22
JP5249447B1 (ja) 2013-07-31
US20140224152A1 (en) 2014-08-14
EP2851142A4 (en) 2015-07-08

Similar Documents

Publication Publication Date Title
US9796015B2 (en) Molding sand for three dimensional laminate molding
CN107470549B (zh) 用于制备覆膜砂的组合物和制备覆膜砂的方法及覆膜砂
JP5867938B1 (ja) 鋳型及び鋳型の製造方法
CN102744366B (zh) 钛铝基及铌硅基合金定向凝固熔模精铸模壳的制备方法
Choi et al. Application of dual coating process and 3D printing technology in sand mold fabrication
CN106238674B (zh) 一种钛合金铸造用覆膜锆砂砂型的制备方法
JP7293529B2 (ja) 鋳造用砂型の製造方法
CN109261890A (zh) 陶瓷型芯用打印材料及其制备方法与陶瓷型芯的制备方法
CN101176909B (zh) 一种精密砂芯用浸涂涂料
Li et al. Controlled anisotropy in 3D printing of silica-based ceramic cores through oxidization reaction of aluminum powders
US20140238632A1 (en) Methods for repairing ceramic cores
CN110227792A (zh) 一种新型的铸造冷芯盒用型砂以及制芯工艺
Nagai et al. Molding and mold properties of spherical artificial sand coated with inorganic binder
CN110116187A (zh) 3dp砂型打印用粘结剂的组合应用方法
US20160114384A1 (en) Precision-casting core, precision-casting core manufacturing method, and precision-casting mold
CN105414448A (zh) 一种泵阀铸件用含纳米氧化铈的改性碱性酚醛树脂自硬砂及其制备方法
JP2008207238A (ja) 鋳造鋳型
JP4754309B2 (ja) ダイカスト用中子
KR102243038B1 (ko) 무기바인더를 이용하는 사형 주조용 주형 및 중자의 제조방법과 이를 이용하는 주조품 제조방법
Gromada et al. The effect of additives on properties of silica-based ceramic cores utilised in fabrication of multivane clusters for turbofan jet engine
JP4421466B2 (ja) 鋳造用鋳型用スラリー及びそれを用いて得られる鋳型
CN115464092A (zh) 壳模材料组成物、壳模的制作方法与壳模
JPH05212487A (ja) 鋳型の製造方法
Tshabalala et al. Properties of furfuryl alcohol resins for conventional sand moulding and binder jetting applications
CN105174722A (zh) 一种添加石英玻璃球形粉的陶瓷型芯材料

Legal Events

Date Code Title Description
AS Assignment

Owner name: KIMURA CHUZOSHO CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FUKUDA, YOYO;HAYASHI, KENICHI;KOMAI, TAKASHI;AND OTHERS;REEL/FRAME:032395/0025

Effective date: 20140305

AS Assignment

Owner name: KIMURA CHUZOSHO CO., LTD., JAPAN

Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE CORRECTIVE ASSIGNMENT TO CORRECT THE FIRST INVENTOR'S FIRST NAME FROM YOYO TO YOYA PREVIOUSLY RECORDED ON REEL 032395 FRAME 0025. ASSIGNOR(S) HEREBY CONFIRMS THE THE ASSIGNMENT;ASSIGNORS:FUKUDA, YOYA;HAYASHI, KENICHI;KOMAI, TAKASHI;AND OTHERS;REEL/FRAME:032732/0821

Effective date: 20140305

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 4